K-9 Mail is an open source email client with support for multiple accounts, search, IMAP push email, multi-folder sync, flagging, filing, signatures, BCC-self, PGP/MIME & more!

K-9 supports IMAP, POP3 and Exchange 2003/2007 (with WebDAV).

Install the app "OpenKeychain: Easy PGP" to encrypt/decrypt your emails using OpenPGP.

K-9 is a community developed project. If you're interested in helping to make the most popular open source email client on Android even better, please join us! You can find our bug tracker, source code, mailing list and wiki at github.com/k9mail/k-9
We're always happy to welcome new developers, designers, documenters, bug triagers and friends.

If you're having trouble with K-9, please report a bug at github.com/k9mail/k-9 rather than just leaving a one-star review. We don't mind you telling the world that you're frustrated, but if you use our bug tracker, we have a better chance of fixing whatever's giving you a hard time.

You can find K-9's release notes at: bit.ly/new-k9

(People sometimes call K-9: K9, K9 Mail, K-9 Email, K9 Email, K9 E-Mail, k9mail or k9email.)
From version K-9 Mail 5.600:
- Further improvements to encryption user experience
- Added ability to forward a message as attachment
- Improved the way we display text/plain messages
- Improved rendering of right-to-left text
- Fixed bug that caused draft messages to be lost
- More bug fixes
Variant
Arch
Version
DPI
(noarch)
Latest: 5.007 on December 14, 2015
(universal)
Latest: 5.600 on September 2, 2018
All versions
September 2, 2018
May 22, 2018
January 7, 2018
December 31, 2017
September 5, 2017
August 1, 2017
January 5, 2017
April 4, 2016
January 29, 2016
October 12, 2015